Built at the edge of the Seine, the building was designed like a viaduct...In addition to the [main] building, there are two buildings located at the northeast end of the grounds. It crosses along the Seine by a bridge of 70m in length. The three buildings have an overall surface area of about 216,000 m2 and must occupy 4700 agents of the ministry. Source: www.structurae.de/fr/structures/data/str04233.php